condition mean min max ZT0-3 28.391999999999996 10.85775 38.581649999999996 ZT4-7 9.93383 9.93383 9.93383 ZT8-11 10.61025 10.61025 10.61025 ZT12-15 17.131975 11.70515 22.5588 ZT16-19 25.0029 25.0029 25.0029 ZT20-23 37.14775 37.14775 37.14775